Two weeks ago I tried to make a decaf coffee with pre-ground coffee, but my machine threw a "too much pre-ground coffee" error (used the spoon that came with it BTW).
I tried to clean the pre-ground funnel with a spoon, brush, knife etc. I couldn't see any coffee anymore so I thought it'd be ok.
This morning the bean to cup coffee tastes horrible and the same horrible smell is coming from the pre-ground coffee tunnel.
How do I clean the machine correctly? There's no information about it online. It's a long funnel.